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    <h4>超链接语法</h4>
    <a href="http://www.qq.com" target="_self">腾讯</a>

    <a href="http://www.wechat.com" target="_blank">微信</a>

    <h4>超链接之内部链接</h4>
    <a href="div and span 标签.html">图像标签</a>

    <h4>空链接</h4>
    <a href="#">空连接</a>

    <h4>图片里面加超链接</h4>
    <a href="http://qq.com"><img src="img1.jpg"></a>

    <h4>超链接里面下载安装包</h4>
    <a href="img1.rar">安装包</a>
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